mm: sync max_cached_processes settings in ActivityManager

Bug: 237364731
Test: pts-tradefed run commandAndExit pts -m PtsPerfWbsTestCases -t
com.google.android.perfwbs.pts.MemoryTest#testMaxCachedProcesses

Change-Id: I47cb03f2053287fc4b7c2249c885b7b7de4fd3a8

lynx/overlay/frameworks/base/core/res/res/values/config.xml

@@ -155,6 +155,9 @@
     <!-- The default peak refresh rate. -->
     <integer name="config_defaultPeakRefreshRate">90</integer>
 
+    <!-- the number of the max cached processes in the system. -->
+    <integer name="config_customizedMaxCachedProcesses">64</integer>
+
     <integer-array name="config_ambientThresholdLevels">
         <item>2</item>
         <item>3</item>